Dark matter (DM) constitutes 26.8% of the entire universe and is one of the most significant mysteries in modern physics. The study of its particle properties is a critical and forefront topic in particle physics and cosmology, unlocking a deeper understanding of the universe and establishing the inherent unity of science.Ultralight dark matter could address small-scale structure problems of...
High-frequency gravitational waves (HFGWs) carry a wealth of information on the early Universe with a tiny comoving horizon and astronomical objects of small scale but with dense energy. We demonstrate that the nearby planets, such as Earth and Jupiter, can be utilized as a laboratory for detecting the HFGWs. These GWs are then expected to convert to signal photons in the planetary...
Understanding the nature of dark matter and the first luminous objects of the universe is an indomitable urge of human beings. Various 21 cm signals from neutral hydrogen and various experiments have been proposed, or being used, to unveil the mysteries, but suffering from parameter degeneracies between particle physics and the unknown astrophysics at cosmic dawn. The 21-cm absorption lines...
